EP0890409A2 - Système amélioré pour le soudage de wagons - Google Patents

Système amélioré pour le soudage de wagons Download PDF

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Publication number
EP0890409A2
EP0890409A2 EP98112229A EP98112229A EP0890409A2 EP 0890409 A2 EP0890409 A2 EP 0890409A2 EP 98112229 A EP98112229 A EP 98112229A EP 98112229 A EP98112229 A EP 98112229A EP 0890409 A2 EP0890409 A2 EP 0890409A2
Authority
EP
European Patent Office
Prior art keywords
welding
welding device
car
body side
cars
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP98112229A
Other languages
German (de)
English (en)
Other versions
EP0890409A3 (fr
Inventor
Bruno Bisiach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0890409A2 publication Critical patent/EP0890409A2/fr
Publication of EP0890409A3 publication Critical patent/EP0890409A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/10—Spot welding; Stitch welding
    • B23K11/11—Spot welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/02—Carriages for supporting the welding or cutting element
    • B23K37/0211—Carriages for supporting the welding or cutting element travelling on a guide member, e.g. rail, track
    • B23K37/0217—Carriages for supporting the welding or cutting element travelling on a guide member, e.g. rail, track the guide member being fixed to the workpiece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/047—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps

Definitions

  • the present invention refers to an improved system for welding railway or subwayr cars and the like.
  • Cars for transporting people on rails are of two main types: aluminum cars and stainless steel cars.
  • the manufacturing of both types of cars for railway and subway systems substantially comprises the steps of separately preparing the car floor or well, the two side frames (body sides) and the roof, and then manually welding together these four parts, that is by the intervention of single workers to weld first the floor to the two body sides, and then the roof to the body sides, after positioning the roof over the sides.
  • Welding is achieved through the so called "Mig-Mag” process for aluminum and through spot welding in case of stainless steel.
  • the term "properly positioning” means the mutual coupling between the main parts of a car, i.e. the floor, the body sides and the roof, in accordance with the measures requested by the design. While allowing for coupling and working tolerancies, such measures are preferably to be met through an automatic adjusting and welding procedure.
  • the applicant has already developed an automated system for solving the above mentioned problem, which system is disclosed in Italian patent application No. TO97A000354. Through such a system a satisfactory "Mig-Mag" welding is ensured.
  • the object of the present invention is to improve the system disclosed in the above mentioned Italian patent application No. TO97A000354 by providing means that allows an equally effective welding even of stainless steel cars, that is means adapted to accomplish a spot welding.
  • This way an improved automatic system is provided which is capable of accomplishing the welding operations of large size cars such as those of railway, subway and similar transport systems, capable to withstand the high welding pressures and to weld parts of complex shapes as are those of the above mentioned cars.
  • a further object of the present invention is to ensure a high quality of the final car that has been subjected to such complex operations of the above mentioned type, where the several parts of a car are joined together while respecting the operation tolerancies and without critical points due to manual working.
  • the improved system for welding railway, subway cars and the like is a modular system i. e. it is capable of automatically accomplishing - either simultaneously or separately - both welding operations, i.e. a continuous welding of the side lower portion and a spot welding of the side complex shapes in which window and door openings are formed.
  • a "complete" welding system is disclosed that can be applied to a global system for properly aligning and welding cars such as the system disclosed in the above mentioned Italian patent application whereby the system is capable of carrying out both a "Mig-Mag” welding (as dislosed in the above mentioned Italian patent application), and a spot welding.
  • the system of the present invention allows to manufacture a complete car 1 (either a railway or a subway car), by welding to each other a floor 3, at least a side panel or side 5 and a roof 7.
  • a complete car 1 either a railway or a subway car
  • a floor 3 at least a side panel or side 5 and a roof 7.
  • different types of systems are possible, e.g. using only one of the devices described hereinbelow, capable of accomplishing the operations required for the single welding devices.
  • the system of the present invention comprises a supporting frame 9 extending along the whole body side of the car to be manufactured.
  • This supporting frame 9 is mounted on posts 12 connected to each other through bed plates 13 over which rest rail supports 14 that extend om the whole body side of the car.
  • the supporting frame 9 is further provided with walkways 16 over which operate the personnel controlling the assembling and/or welding operations.
  • the apparatus of the present invention can also be employed for welding a car body from inside in the presence of openings for windows and doors.
  • the frame 9 is provided with an upper elongated supporting member 17 connected to the upper ends 18 of each of said posts 12 and extending for the whole length of the car sides.
  • a first welding device 19 that is longitudinally movable and can enter into the car through openings formed in the car roof, a completely automated inner welding task can be accomplished.
  • the system of the present invention provides for a second welding device 21 slidably mounted along the rail support 14: since the support 14 is so shaped (e.g. by inserting proper shims where necessary) as to follow the curved profile of the floor 3 through the system disclosed in the above mentioned Italian patent application, also the second welding device 21, in its operating welding motion, will follow the precise profile of the floor curvature.
  • the second welding device 21 has to be designed so as to solve two main working problems: (a) withstanding the high welding pressures that would tend to move the device far from the car side 5; and (b) being adjustable to the different car designs, i.e. allowing the welding electrode 23 to be tilted through a rotation with respect to the sheet plane, so as to track the contour of the different types of cars to be welded.
  • the second welding device 21 is coupled to a shaped bracket 24 the lower portion of which is built to be both longitudinally slidable with respect to the support 14, and firmly permanently secured by such support 14 in a direction perpendicular to the longitudinal direction. Additionally the upper portion of such bracket 24 provides for a pivot point 25 to wich a connecting rod 26 is connected, that in turn is coupled to a pivot point 27 on a trolley 28. The trolley 28 is slidable on rails 29 secured to the supporting frame 9. Thanks to the connecting rod 26 the second welding device 21 can follow the contour of the lower rail 14 so as to maintain the car "camber". Thanks to this feature of the invention cars of any shapes can be welded.
  • the support 14 and frame 9 allows to the welding device 21 to overcome all the welding forces generated during the operation and that would tend to move the device far from the car, thus jeopardizing the proper welding process, since the connecting rod 26 resists such outward force.
  • the first welding device 19 slidably coupled to the frame 9 through a connecting girder 34 and provided with corresponding welding electrodes 35, 35'.
  • the first welding device 19 must be capable of welding complex shapes, that is shapes in which openings for windows and door are formed: therefore such device must be capable of moving along the longitudinal, vertical and transverse directions of the car, and be rotatable both about the car longitudinal axis and about an axis perpendicular thereto.
  • the first welding device 19 is designed to be pivotally coupled at 37 to the girder 34 so that it can rotate about the car longitudinal axis.
  • the rotation about an axis orthogonal to the longitudinal direction is accomplished through a disc 38 on which rest the electrode holder arms 39, 39' carrying the welding electrodes 35, 35', respectively.
  • the girder 34 is connected to a linear prismatic guide 40 and can slide with respect to this latter through wheels 40'; the prismatic guide 40 is connected so as to be transversely slidable with respect to a beam 41 that in turn is connected to a trolley 42 longitudinally movable along rails 43 connected to the frame 9.
  • the two welding electrodes 35, 35' are connected to the electrode holder arms 39, 39', respectively, that are pivotally mounted at 45: by means of a lever 45' it is possible to adjust the opening and closing of the arms 39, 39' for positioning them at the welding position.
  • a counterweight member 46 is therefore provided which is connected to the girder 34 and to the frame 9: the pulling force of such counterweight member 46 can be adjusted through a metal rope 47 extending about a pulley 49 that is fastened to a hook 50 supporting the first welding device 19 and controlled through conventional means (not shown).
  • system can further comprise internal welding devices to completec the assembly and the welding of the railway or subway car.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
EP98112229A 1997-07-11 1998-07-02 Système amélioré pour le soudage de wagons Withdrawn EP0890409A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO970615 1997-07-11
IT97TO000615A IT1293430B1 (it) 1997-07-11 1997-07-11 Sistema perfezionato per la saldatura di vagoni ferroviari, metropolitani e simili.

Publications (2)

Publication Number Publication Date
EP0890409A2 true EP0890409A2 (fr) 1999-01-13
EP0890409A3 EP0890409A3 (fr) 1999-07-28

Family

ID=11415852

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98112229A Withdrawn EP0890409A3 (fr) 1997-07-11 1998-07-02 Système amélioré pour le soudage de wagons

Country Status (2)

Country Link
EP (1) EP0890409A3 (fr)
IT (1) IT1293430B1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1043206A1 (fr) * 1999-04-06 2000-10-11 BISIACH & CARRU' S.p.A. Procédé d'assemblage des véhicules ferroviaires
US8448835B2 (en) 2008-08-21 2013-05-28 Esab Ab Device for welding
CN114799605A (zh) * 2022-06-10 2022-07-29 庆铃汽车（集团）有限公司 车厢自动焊接生产线

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH642583A5 (en) * 1981-08-25 1984-04-30 Castolin Sa Beam for supporting and/or guiding a carriage
EP0296422A2 (fr) * 1987-06-26 1988-12-28 Oxytechnik Ges. für Systemtechnik mbH Equipement pour l'usinage de fonds, en particulier pour le découpage de trous dans ces fonds
FR2719515A1 (fr) * 1994-05-06 1995-11-10 Peugeot Pince à souder par points.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH642583A5 (en) * 1981-08-25 1984-04-30 Castolin Sa Beam for supporting and/or guiding a carriage
EP0296422A2 (fr) * 1987-06-26 1988-12-28 Oxytechnik Ges. für Systemtechnik mbH Equipement pour l'usinage de fonds, en particulier pour le découpage de trous dans ces fonds
FR2719515A1 (fr) * 1994-05-06 1995-11-10 Peugeot Pince à souder par points.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1043206A1 (fr) * 1999-04-06 2000-10-11 BISIACH & CARRU' S.p.A. Procédé d'assemblage des véhicules ferroviaires
US8448835B2 (en) 2008-08-21 2013-05-28 Esab Ab Device for welding
CN114799605A (zh) * 2022-06-10 2022-07-29 庆铃汽车（集团）有限公司 车厢自动焊接生产线
CN114799605B (zh) * 2022-06-10 2023-12-19 庆铃汽车（集团）有限公司 车厢自动焊接生产线

Also Published As

Publication number Publication date
IT1293430B1 (it) 1999-03-01
ITTO970615A1 (it) 1999-01-11
EP0890409A3 (fr) 1999-07-28

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